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ML4813

Part Number	ML4813
Manufacturer	Micro Linear
Description	Flyback Power Factor Controller
Published	May 7, 2005
Detailed Description	April 1997 ML4813* Flyback Power Factor Controller GENERAL DESCRIPTION The ML4813 is a PWM controller designed for use ...
Datasheet	ML4813 PDF File

Overview

April 1997 ML4813* Flyback Power Factor Controller GENERAL DESCRIPTION The ML4813 is a PWM controller designed for use in a discontinuous "flyback" or "buck-boost" type power factor correction (PFC) system for low power, low cost applications.
The circuit includes a precision reference, oscillator, error amplifier, over-voltage comparator, over-current comparator, and an extra op-amp as well as a high current output.
In addition, start-up is simplified by an under-voltage lockout circuit.
In a typical application, the ML4813 functions as a voltage mode regulator.
By maintaining a constant duty cycle, the current follows the input voltage, making the impedance of the entire circuit appear pu...

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